intergas or viessmann? Maybe something else!?

[franky]

So, I need a system boiler.

5 bed, 2 bathroom, 3 underfloor zones(25sq m/26sq m / 12 sqm), 2 radiator zones(upper and lower), hot water(mains pressure 250ltr oso).

I was looking at a viessmann, then an ideal gen2, however have been looking into the intergas system boilers.

Are they that good? boiler needs to be 27-35kw.

Any better ideas? Thanks in advance.

 

[dancinplumba]

Intergas are excellent, go for the ECO RF combi version and get 10 year warranty, ignore combi side , use with Honeywell controls too

 

[franky]

Thanks. I've got new heatmeiser controls with the UFH, so expanded them to suit the radiator and water.

 

[dancinplumba]

Thanks. I've got new heatmeiser controls with the UFH, so expanded them to suit the radiator and water.

good one

 

[dancinplumba]

ECO RF Boiler - Intergas Heating

 

[franky]

ECO RF Boiler - Intergas Heating

Strange question, I could set the boiler up with the zones and water cylinder as needed, however also use the hot water side of the boiler to run the kitchen etc? The boilers in the kitchen, so if it'll do hot water also, then it just means a much shorter pipe run to the sinks etc? In effect i'll have mains pressure for the showers and the combi side for the kitchen/utility?

 

[dancinplumba]

Strange question, I could set the boiler up with the zones and water cylinder as needed, however also use the hot water side of the boiler to run the kitchen etc? The boilers in the kitchen, so if it'll do hot water also, then it just means a much shorter pipe run to the sinks etc? In effect i'll have mains pressure for the showers and the combi side for the kitchen/utility?

got ya head screwed on right, lots of ways to control these boilers too OT,WC, PDHW

 

[king of pipes]

Nice boilers a new model due out shortly a with centre flue the xtreme .kop

 

[franky]

Whats your thoughts on using both stored water and the combi for couple of sinks etc?

 

[king of pipes]

Yes i would definitely do it makes great sense . Cheers kop

 

[franky]

how do they compare to viessmann etc in the real world? I do like the idea of less movign parts etc.

 

[king of pipes]

I prefer them don't be put off visseman are a good well designed boiler I have been to their headquarters and done the courses but would still choose Intergas or Atag it's just personal preference. Kop

 

[Old Account]

As above KOP has mentioned really good interior designed boilers. However, you will always get different opinions from each installer. My preference is Vaillant and especially in your case i would have gone with the exclusive green iq exclusive 627. This system boiler doesn’t need any zone valves which could go faulty at any time too which saves you from hassle. Furthermore the boiler is self modulating which means it modulates between 3.4-27kw ... currently you may not need the full 27kw but 15kw so it won’t use the whole lot.

 

[ShaunCorbs]

So there's not a diverter/ zone valve inside the boiler

 

[Old Account]

So there's not a diverter/ zone valve inside the boiler

Taking a Micky ?

 

[ShaunCorbs]

Taking a Micky ?

No but your statement is wrong

Your boiler has a port valve / diverter valve which can go faulty as well

 

[Old Account]

No but your statement is wrong

Your boiler has a port valve / diverter valve

Really, did not know that is so wrong but as you are the master of plumb8ng I apologise and will correct myself. He does not need any additional zone valves when installing a 627.

 

[ShaunCorbs]

No as the boiler sorts all that out

 

[franky]

As above KOP has mentioned really good interior designed boilers. However, you will always get different opinions from each installer. My preference is Vaillant and especially in your case i would have gone with the exclusive green iq exclusive 627. This system boiler doesn’t need any zone valves which could go faulty at any time too which saves you from hassle. Furthermore the boiler is self modulating which means it modulates between 3.4-27kw . currently you may not need the full 27kw but 15kw so it won’t use the whole lot.

how do you control zones without zone valves?

 

[franky]

I've had a look....

https://www.vaillant.co.uk/download...-green-iq-1/10614038-exclusive-6pp-917073.pdf

Its got a 3 port valve in it, so to control a number of zones(3 needed) you'd still have to have two port valves? As I under stand things!?

 

[ShaunCorbs]

how do you control zones without zone valves?

There inside the boiler eg wire the controls back to the boiler

 

[ShaunCorbs]

I've had a look..

https://www.vaillant.co.uk/download...-green-iq-1/10614038-exclusive-6pp-917073.pdf

Its got a 3 port valve in it, so to control a number of zones(3 needed) you'd still have to have two port valves? As I under stand things!?

If you're got more than two zones heat only boiler and sort it from there nice a simple

 

[king of pipes]

Zone valves still the best way for you especially as you have quite a few zones, your installer will need to add a extra expansion vessel to your system aswell. Kop